20556120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13177}}^1$

素因数の和:13204

約数の個数: 64

約数和(自身を含む): 66417120

約数和(自身を除く): 45861000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13177, 26354, 39531, 52708, 65885, 79062, 105416, 131770, 158124, 171301, 197655, 263540, 316248, 342602, 395310, 513903, 527080, 685204, 790620, 856505, 1027806, 1370408, 1581240, 1713010, 2055612, 2569515, 3426020, 4111224, 5139030, 6852040, 10278060, 20556120]

約数ペア:

[(1, 20556120), (2, 10278060), (3, 6852040), (4, 5139030), (5, 4111224), (6, 3426020), (8, 2569515), (10, 2055612), (12, 1713010), (13, 1581240), (15, 1370408), (20, 1027806), (24, 856505), (26, 790620), (30, 685204), (39, 527080), (40, 513903), (52, 395310), (60, 342602), (65, 316248), (78, 263540), (104, 197655), (120, 171301), (130, 158124), (156, 131770), (195, 105416), (260, 79062), (312, 65885), (390, 52708), (520, 39531), (780, 26354), (1560, 13177)]